Mercurial > prosody-modules

annotate mod_pubsub_text_interface/mod_pubsub_text_interface.lua @ 5801:73887dcb2129

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mod_pubsub_serverinfo: New module that uses pub/sub to make accessible server info This first implemetnation is laughably simple: it only adds a disco#info feature. This flags 'opt-in' for inclusion of local domain names in the data exposed by other domains (per the domain), which will allow servers to be listed in the XMPP Network Graph at https://xmppnetwork.goodbytes.im Hopefully, this bare-boned implementation acts as a stepping stone for future improvements.
author Guus der Kinderen <guus.der.kinderen@gmail.com>
date Thu, 28 Dec 2023 11:02:35 +0100
parents e0d0ef564095
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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ca856a892719 mod_pubsub_text_interface: A chat interface to PubSub
Kim Alvefur <zash@zash.se>
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1 local st = require "util.stanza";
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2 local jid = require "util.jid";
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3 local id = require "util.id";
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4
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5 local pubsub = module:depends "pubsub".service;
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6
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7 local xmlns_quick_resp = "urn:xmpp:tmp:quick-response";
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8 local name = module:get_option_string("name", "PubSub Service on "..module.host);
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9 local help = name..[[
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10
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11 Commands:
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12
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13 - `help` - this help message
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14 - `list` - list available nodes
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15 - `subscriptions` - list nodes you are subscribed to
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16 - `subscribe NODE` - subscribe to a node
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17 - `unsubscribe NODE` - unsubscribe from a node]];
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18 if pubsub.get_last_item then -- COMPAT not available in 0.10
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19 help = help .. "\n- `last NODE` - send the last item (again)"
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20 end
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21 -- FIXME better word for "node"
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22
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23 local friendly_pubsub_errors = {
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24 ["forbidden"] = "You are not allowed to do that";
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25 ["item-not-found"] = "That node does not exist";
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26 ["internal-server-error"] = "Something went wrong (see server logs)";
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27 ["not-subscribed"] = "You were not subscribed";
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28 };
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29
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30 module:hook("message/host", function (event)
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31 local stanza = event.stanza;
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32 local body = stanza:get_child_text("body");
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33 if not body then return end -- bail out
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34
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35 local from = stanza.attr.from;
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36
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37 local reply = st.reply(stanza);
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38 reply.attr.id = id.medium();
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39
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40 local command, node_arg = body:match("^(%a+)%s+(.*)");
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41 command = (command or body):lower();
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42
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43 if command == "help" then
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44 reply:body(help):up();
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45 reply:tag("response", { xmlns = xmlns_quick_resp, value = "list", }):up();
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46 reply:tag("response", { xmlns = xmlns_quick_resp, value = "subscriptions", }):up();
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47 elseif command == "list" then
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48 local ok, nodes = pubsub:get_nodes(from);
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49 if ok then
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50 local list = {};
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51 for node, node_obj in pairs(nodes) do
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52 table.insert(list, ("- `%s` %s"):format(node, node_obj.config.title or ""));
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53 end
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54 reply:body(table.concat(list, "\n"));
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55 else
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56 reply:body(friendly_pubsub_errors[nodes] or nodes);
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57 end
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58 elseif command == "subscriptions" then
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59 local ok, subs = pubsub:get_subscriptions(nil, from, from);
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60 if not ok then
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61 reply:body(friendly_pubsub_errors[subs] or subs);
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62 elseif #subs == 0 then
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63 reply:body("You are not subscribed to anything from this pubsub service");
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64 else
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65 local response = {};
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66 for i = 1, #subs do
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67 response[i] = string.format("- `%s`", subs[i].node);
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68 reply:tag("response", { xmlns = xmlns_quick_resp, value = "unsubscribe "..subs[i].node, }):up();
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69 reply:tag("response", { xmlns = xmlns_quick_resp, value = "last "..subs[i].node, }):up();
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70 end
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71 reply:body(table.concat(response, "\n"));
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72 end
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73 elseif command == "subscribe" then
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74 local ok, err = pubsub:add_subscription(node_arg, from, jid.bare(from), { ["pubsub#include_body"] = true });
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75 reply:body(ok and "OK" or friendly_pubsub_errors[err] or err);
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76 elseif command == "unsubscribe" then
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77 local ok, err = pubsub:remove_subscription(node_arg, from, jid.bare(from));
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78 reply:body(ok and "OK" or friendly_pubsub_errors[err] or err);
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79 elseif command == "last" and pubsub.get_last_item then
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80 local ok, item_id, item = pubsub:get_last_item(node_arg, from);
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81 if not ok then
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82 reply:body(friendly_pubsub_errors[item_id] or item_id);
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83 elseif not item_id then
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84 reply:body("That node does not contain any items");
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85 else
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86 pubsub.config.broadcaster("items", node_arg, {
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87 [from] = { ["pubsub#include_body"] = true }
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88 }, item, nil, pubsub.nodes[node_arg]);
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89 reply:body("OK");
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90 end
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91 else
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92 reply:body("Unknown command. `help` to list commands."):up();
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93 reply:tag("response", { xmlns = xmlns_quick_resp, value = "help", }):up();
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94 end
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95 reply:reset();
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96
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97 if stanza:get_child("no-copy", "urn:xmpp:hints") then
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98 reply:tag("no-copy", { xmlns = "urn:xmpp:hints" }):up();
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99 end
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100
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101 if stanza:get_child("no-store", "urn:xmpp:hints") then
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102 reply:tag("no-store", { xmlns = "urn:xmpp:hints" }):up();
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103 end
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104
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105 module:send(reply);
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106 return true;
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107 end);